TEN-TAP programming - Choose from three user-selectable programs: 1 - high/strobe/low (factory default), 2 - high only, 3 - low/high; Output with rechargeable battery pack: High: 550 lumens, Low: 40 lumens, Strobe: runs 4.5 hours; Uses (1) Streamlight proprietary protected lithium polymer USB-C rechargeable battery pack or (2) AA alkaline batteries; Multi-function, push-button tail switch; Durable, anodized aluminum construction with gasket-sealed glass lens; IPX7 waterproof to 1 meter; 2-meter impact resistance tested; Length: 6.0 in (15.3 cm), Weight: 3.5 oz (99g); Removable pocket clip; Nylon holster included; Anti-roll face cap